I use them both. I like No poo the best I think though. No poo is a creme cleanser whereas low poo has 5% poo in it and the rest conditioner. I like No poo better because it doesn't condition my hair though so it's a tad more drying I think although not by much.
Both if I'm not mistaken are sulfate free. My hair does fine with either the low poo just is more moisturizing than my hair needs.
Low porosity, medium texture.

If it smells good put it in your hair, if it tastes good spit it out!